#!/bin/sh

PREFIX=@PREFIX@
: ${LIBDIR=$PREFIX/lib}
. "$LIBDIR/libalpine.sh"

conf="$ROOT/etc/ssmtp/ssmtp.conf"

usage() {
	cat <<-EOF
		usage: setup-mta [-h] [SMTPSERVER]

		Setup SMTP server for outgoing email

		options:
		 -h  Show this help

        If SMTPSERVER is not prompted user will be prompted
	EOF
	exit $1
}

cfgval() {
	awk -F= "/^$1/ {print \$2}" $conf 2>/dev/null
}

setcfg() {
	local key="$1"
	local value="$2"
	mkdir -p "${conf%/*}"
	sed -i "s/^\\(\\#\\)*$key=.*/$key=$value/" "$conf" 2>/dev/null
	if ! grep -q "^$key=" "$conf" 2>/dev/null; then
		echo "$key=$value" >> "$conf"
	fi
}

while getopts "h" opt; do
	case $opt in
		h) usage 0;;
		'?') usage "1"  >&2;;
	esac
done
shift $(( $OPTIND - 1 ))

mailhub="$1"

if [ -f "$conf" ] ; then
	mailhub=$(cfgval mailhub)
fi
domain=$(hostname -d $hostname 2>/dev/null)
if [ -z "$mailhub" ] ;then
	if [ -n "$domain" ] ; then
		mailhub="smtp.$domain"
	else
		mailhub=smtp
	fi
fi

res=

while [ $# -eq 0 ] && [ "$res" != "221" ]; do
	ask "Outgoing mail server? (e.g 'smtp.isp.com')"  "$mailhub"
	mailhub="$resp"
	if ! ask_yesno "Test connection? (y/n)" y; then
		break
	fi
	res=$(printf "quit\r\n\n" | nc $mailhub 25 | awk '/^221/ {print $1}')
	[ "x$res" = "x221" ] && echo "Connection to $mailhub is ok."
done

apk add ssmtp

setcfg mailhub $mailhub
setcfg FromLineOverride YES